Western Digital Purple 1 TB 3.5" SATA 3 is an internal hard drive (HDD) specifically designed for video surveillance systems (DVR and NVR) that operate continuously 24/7This series is optimized to withstand high temperatures and constant vibrations typical of recorders.

• Capacity : 1 TB (1000 GB).
• Size (Format) : 3.5 inches.
• Interface : SATA III (6 Gb/s).
• Rotation speed : 5400 RPM (revolutions per minute).
• Cache memory : 64 MB.
• Recording technology : CMR (Conventional Magnetic Recording)